And so we will need: some container for the mold (I took a box from under the Japanese grub), silicone sealant, gasoline, soap, and actually models of future ice caps.
We install models in capacity. Attach to the bottom slightly greased with the same sealant.
We make a soap solution. You can use liquid soap diluted in water in a ratio of 1: 1.
Soap our form and model with soap. This is necessary so that the finished form is easily separated. Do not forget that silicone sealant is also glue. Let the soap dry.
Next, we prepare the composition for applying the first layer. To do this, we dilute the sealant to a gel-like state with gasoline. Silicone sealant smells like vinegar, and you may be tempted to dilute it with essence. This can never be done. By the way, sealant diluted in gasoline is a wonderful thing. They can soak the fabric and it will become waterproof. In our case, this first layer is needed in order to copy the smallest details. I even copied the Lego inscription on each pimple. If you immediately pile the sealant from the tube, then bubbles and voids may form in the mold.
After the first layer has dried, fill the form with an undiluted sealant. Each layer should not be thicker than 3-4 mm. Otherwise, the silicone will not freeze inside.
We take out, wash, pour water into the freezer.
Done. It is better to take water not immediately from under the tap, but from the filter and settled. Then there will be no bubbles in the ice cubes and the ice will be transparent.
In this way, ice molds can be made in the form of anything. We look at ideas here. Now I’m making a wrench shape myself. Will be cool.